Following the 'throwing' theme proposed by the previous iBrick, I have a new software proposition; the iScam. Simply put, iScam is a technological marvel, perpetually collecting and archiving information on all the lastest Internet scams, before signing you up for all of them at once. Then, it cancels your mortgage payments, shreds your utility bills and mails your tax records to the ATO. Because if you're going to throw away your money on an iPhone, you may as well throw away all of it...
Another idea, is an expansion upon the previous stylus proposal. Further application of the stylus would include a real time, multi user graphics editor. Similiar in style to the Pictochat feature of the Nintendo DS, the multi user stylus program would utilize the iPhone's web connectivity functions, as well as the local connectivity such as BlueTooth, to allow iPhone users to collaborate using the graphics editor on a single canvas, in real time, rather than concurrently, as is available using Pictochat, thus transcending the regular boundaries put into place by generic textual or graphical Internet communications media.
The graphics editor would also utilize the greater precision of the stylus and the iPhone touch screen, as well as the accelerometers to correct the screen alignment to either landscape or portrait, according to how the phone is held. The camera could also be integrated into the program, allowing users to also exchange photos instantaneously.
That is all.
-S